Add time:07/23/2019         Source:sciencedirect.com

Reaction of [Cu(PR3)Cl]4 [where PR3 = tri-p-tolylphosphine (tptp), or triphenylphosphine (tpp)] with several heterocyclic thiones (L) yields binuclear complexes of the general formula [Cu(PR3)(L)Cl]2 [L = 1,3-thiazolidine-2-thione (tzdtH), benz-1,3- thiazoline-2-thione (bztztH), dithiouracil (dtu), purine-6-thione (pur6SH) and thiourea (tu)]. Irradition of the complexes, in chloroform, methanol and acetonitrile solutions, caused phosphine evolution while the Cu2S2 core remained intact. The crystal structure of [Cu(tptp)(tzdtH)Cl]2 has been established by single-crystal X-ray diffraction methods. In the Cu2S2 core the CuS bond lengths are 2.386(1) and 2.470(1) Å. The CuP and CuCl distances are 2.222(1) and 2.283(1) Å, respectively.

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